In fact, the wheel bearing of the previous model is very easy to be damaged. Because of the ball bearing used, it cannot achieve 100% sealing, and it must completely rely on lubricating oil to resist wear. As a result, it will not be used for tens of thousands of kilometers, and there will be shortages and cannot be repaired. Maintenance is done by direct replacement, so there will be no repeated lubricating oil.

In the past, automobile wheel bearings did not use lubricating oil, but grease commonly known as "butter". Mineral oil was usually used as the base oil of grease, but if special properties such as low temperature fluidity and high temperature stability were required, it was Synthetic diester oil, silicone oil, polyethylene glycol oil, fluorine oil, etc. are required. Low viscosity base oil grease is suitable for low temperature and high speed applications, while high viscosity base oil grease is suitable for high temperature and high load. application.

Most of the bearings and bearing units used in today's cars are conical bearings and bearing units, and they have been developed to four generations. Although this style of bearings can effectively disperse the axial force caused by wheel impact, it also requires the presence of lubricating oil. Yes, it just doesn't need to be reapplied regularly.

Toyota &Lexus Toyota Prius Wheel Hub 43550-47011